It sounds like the call of an extraterrestrial bird species, but the recording featured in the video up top (and the player, down below) is actually made by our very own planet. Scientists call the eerie sequence of quavering whooping sounds "chorus" — and this is one of the clearest examples of the phenomena NASA…

Oh, App Store: You're a chore to navigate, difficult to search, and offer only the most superficial guidance as to which apps are actually good. Chorus—an app recommendation app, as awkward as that sounds—helps cut through the noise.